Bob 1991
| Date | Time | Point | Latitude | Longitude | Max Winds (mph) | Pressure (mb) |
| 8/15 | 8 PM | 1 | 25.6 | 74.3 | 30 | 1014 |
| 8/16 | 2 AM | 2 | 25.7 | 74.9 | 30 | 1012 |
| 8/16 | 8 AM | 3 | 25.9 | 75.4 | 35 | 1010 |
| 8/16 | 2 PM | 4 | 26.4 | 75.8 | 40 | 1005 |
| 8/16 | 8 PM | 5 | 27.1 | 76.2 | 45 | 1003 |
| 8/17 | 2 AM | 6 | 27.8 | 76.5 | 50 | 998 |
| 8/17 | 8 AM | 7 | 28.4 | 76.9 | 65 | 996 |
| 8/17 | 2 PM | 8 | 29.0 | 77.1 | 75 | 986 |
| 8/17 | 8 PM | 9 | 29.7 | 77.0 | 80 | 980 |
| 8/18 | 2 AM | 10 | 30.5 | 76.9 | 85 | 979 |
| 8/18 | 8 AM | 11 | 31.5 | 76.6 | 90 | 974 |
| 8/18 | 2 PM | 12 | 33.0 | 76.1 | 100 | 965 |
| 8/18 | 8 PM | 13 | 34.6 | 75.3 | 110 | 957 |
| 8/19 | 2 AM | 14 | 36.5 | 74.5 | 115 | 950 |
| 8/19 | 8 AM | 15 | 38.9 | 73.0 | 110 | 953 |
| 8/19 | 2 PM | 16 | 41.4 | 71.4 | 100 | 964 |
| 8/19 | 8 PM | 17 | 43.8 | 69.6 | 70 | 977 |
| 8/20 | 2 AM | 18 | 45.6 | 67.6 | 60 | 987 |
| 8/20 | 8 AM | 19 | 47.0 | 65.5 | 50 | 998 |